Return to Tomorrow

Return to Tomorrow
Attribution
Series:	The Original Series
Written by:	John Kingsbridge
Directed by:	Ralph Senensky
Novelization in:	Star Trek 9 by James Blish
Production information
Episode no.:	2x22
Production no.:	6149-51
First aired:	9 February 1968
Chronology
Date:	2268
Stardate:	4768.3

"Return to Tomorrow" was the 51st episode of Star Trek: The Original Series.

References

Characters

Episode characters

Clifford Brent • Christine Chapel • Pavel Chekov • Bill Hadley • Henoch • James T. Kirk • Roger Lemli • Ryan Leslie • Leonard McCoy • Ann Mulhall • Zainab Odhiambo • Sargon • Montgomery Scott • Spock • Hikaru Sulu • Thalassa • Nyota Uhura • unnamed USS Enterprise (NCC-1701) personnel

Referenced only 

Adam and Eve

Novelization characters

Christine Chapel • Hanoch • James T. Kirk • Leonard McCoy • M'Benga • Anne Mulhall • Sargon • Montgomery Scott • Spock • Hikaru Sulu • Thalassa • Nyota Uhura

Starships and vehicles

USS Enterprise (Constitution-class heavy cruiser)

Referenced only 

Apollo 11

Locations

Arret (Arret system, the galaxy's Alpha or Beta Quadrants)

Referenced only 

Alpha Centauri • Earth • Mars

Races and cultures

Arretian • Human • Vulcan

Materials and substances

air • atmosphere • blood • catgut • jelly • nitrogen • oxygen

Foods and beverages

walnut

Drugs and treatments

metabolic reduction injection

Science and medicine

anatomy • astrobiology • pharmacology

Measurement and classification

body temperature • cc • class M planet • Fahrenheit • heart rate • metabolic rate • mile • standard orbit

Anatomy

artery • heart • lung • muscle • vital organ

Technology and weapons

android • distress signal relay • humanoid robot • hypo • micro-gear • negatron hydrocoil • pulley • receptacle • scalpel • starship • subspace radio • transporter • tricorder

Communications and tactics

diagram • subspace radio

States and organizations

Federation • Starfleet

Ranks and titles

captain • chief engineer • chief medical officer • commander • conn • doctor • engineer • ensign • first officer • helmsman • lieutenant • lieutenant commander • medicine man • navigator • physician • science officer • second officer • tactical officer • technician • weapons officer

Other references

Bones • clothing • communication • energy • euphoria • evolution • galaxy • government • humanoid • Kirk in death • Kirk's women • landing party • lifeform • matter • measurement • medicine • memory • nation-state • nuclear age/nuclear era • planet • poison • science • space • technology • time • uniform • universe • weapon

Chronology

Vulcan prehistory 

Mentioned by Spock.

stardate 4768.3, 2268 (2260s chronology, 2264–2270 Enterprise voyages) 

Enterprise travels to Arret.

Appendices

Related media

• TNG - TLE novel: The Buried Age

Adaptations

Novelization collected in The Classic Episodes 2.

Images

Episode image.

Ann Mulhall.

Hadley.

Hadley.

Hadley.

Connections

Timeline

published order
Previous episode: By Any Other Name	TOS episode produced	Next episode: Patterns of Force
Previous episode: A Private Little War	TOS episode aired	Next episode: Patterns of Force
Previous story: first story	Star Trek 9	Next story: The Ultimate Computer
chronological order
Previous Adventure: First, Do No Harm	Memory Beta Chronology	Next Adventure: The Order of Things Pages 15-19
Previous Adventure: Mutiny on the Enterprise	Pocket	Next Adventure: Patterns of Force
Previous Adventure: Mutiny on the Enterprise	Voyages of the USS Enterprise (NCC-1701) (2264 to 2270)	Next Adventure: Patterns of Force

External link

• Return to Tomorrow article at Memory Alpha, the wiki for canon Star Trek.

This character was not named in the episode but the same actor, wearing an officer's Starfleet uniform, was addressed as Brent in TOS episode: "The Naked Time". The same actor also played the character of Vinci.